Closed steaming tank device of liquefied hydrocarbon storage tank

Abstract

The utility model relates to a closed steam tank device of a liquefied hydrocarbon storage tank, which is characterized by comprising a water cutting transformation tee joint, a first end of the water cutting transformation tee joint is connected with a tank body through a connecting flange, a second end of the water cutting transformation tee joint is connected with a waste water recycling position, and a third end of the water cutting transformation tee joint is connected with a steam assembly. According to the airtight steaming tank device of the liquefied hydrocarbon storage tank, due to the optimized design, the efficiency of the steaming tank is improved, the operation safety is ensured, the energy waste is reduced, the newest safety specification is met, and meanwhile the environmental protection performance is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of petroleum chemical industry, especially relates to a liquefied hydrocarbon storage tank closed steaming device. BACKGROUND

[0002] In the past tank inspection process of liquefied hydrocarbon storage tank, after liquid phase emptying, the gas phase in the tank is discharged into the low-pressure gas system for recovery, and when the pressure in the tank is balanced with the pressure of the low-pressure gas system, the light components of liquefied gas in the tank still fill the entire spherical tank. It is necessary to carry out steaming tank treatment to discharge the light components into the low-pressure gas system for recovery. The tank root gate valve is closed, the lower flange is disconnected, and the flange short connection is connected for purging. Then, the steam condensate water in the purging process is discharged out of the tank through the cut water root valve pipeline.

[0003] In order to meet the requirements of safety specifications, the first root gate valve of the spherical tank on the stand pipe will be replaced by an emergency shut-off valve. Due to the site location and pneumatic valve installation conditions, the emergency shut-off valve needs to be installed on the cross pipe. There is a low point between the tank root and the emergency shut-off valve, and long-term steam injection will cause the condensate water to block the air inlet, which will affect the steaming tank effect, so that the site cannot carry out steam injection steaming. UTILITY MODEL CONTENT

[0004] (I) UTILITY MODEL OBJECTIVE

[0005] In order to overcome the above shortcomings, the purpose of the utility model is to provide a liquefied hydrocarbon storage tank closed steaming device to solve the above technical problems.

[0006] (II) TECHNICAL SCHEME

[0007] In order to achieve the above-mentioned purpose, the technical scheme provided by the present application is as follows:

[0008] A liquefied hydrocarbon storage tank closed steaming device, comprising a cut water modified tee, the first end of the cut water modified tee is connected with the tank body through a connecting flange, the second end of the cut water modified tee is connected with a waste water recovery, and the third end of the cut water modified tee is connected with a steam assembly.

[0009] Preferably, a cut water root valve is arranged between the tank body and the cut water modified tee.

[0010] Preferably, a cut water control valve is arranged between the cut water modified tee and the waste water recovery.

[0011] Preferably, the steam assembly comprises a steam base connected with the cut water modified tee, the internal space of the steam base forms a steam injection cavity, a steam injection pipe is sealingly arranged on the steam base, and the end of the steam injection pipe is arranged in the steam injection cavity.

[0012] Preferably, a steam injection nozzle is arranged on the upper end of the steam injection pipe, and a plurality of steam sieve holes are arranged on the steam injection nozzle.

[0013] Preferably, the steam base is provided with a pull hole allowing the gas injection pipe to be pulled out, the steam base is provided with a filler groove at the position of the pull hole, the filler is arranged in the filler groove, and the end of the filler is provided with a gland, which is connected with the steam base through bolts.

[0014] Preferably, the gas injection pipe is connected with a gas injection control valve.

[0015] Preferably, the gas injection pipe is an explosion-proof metal pipe.

[0016] Beneficial effects:

[0017] The liquefied hydrocarbon storage tank sealed steaming tank device optimally designed, improves the steaming tank efficiency, ensures the operation safety, reduces the energy waste, and meets the latest safety specifications, and meanwhile, the environmental protection performance is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a structural schematic view of the utility model;

[0019] Fig. 2 is an internal structure view according to one embodiment of the utility model; DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the following will be combined with specific implementation manners and refer to the attached Figs. 1-2 , the utility model is further explained. It should be understood that these descriptions are only exemplary, and not to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0021] The utility model provides a kind of liquefied hydrocarbon storage tank sealed steaming tank device, including cut water reconstruction tee, the first end of cut water reconstruction tee 33 is connected with tank body 1 by connecting flange, is directly connected with the tank body by connecting flange, ensure the stability and sealing property of device, reduce the leakage risk of connecting portion.Cut water root valve is arranged between the tank body and cut water reconstruction tee 3.By improving steaming tank process, reduce the steam waste due to condensate blockage, improve energy utilization efficiency.By the design of cut water reconstruction tee 3 and cut water root valve 2, the discharge of waste water can be effectively controlled, the discharge amount of waste water is reduced, and the safety of storage tank is improved in emergency.

[0022] The second end of cut water reconstruction tee 3 is connected with waste water recovery, and cut water control valve 4 is arranged between cut water reconstruction tee 3 and waste water recovery, so that the discharge of waste water can be conveniently controlled, the discharge amount of waste water is reduced, and the efficiency of waste water recovery is improved.

[0023] The third end of the water cutting and reforming tee 3 is connected with a steam assembly. The connection of the steam assembly provides a closed steam injection system, ensuring the continuity and efficiency of the steaming process.

[0024] The steam assembly includes a steam base 6 connected with the water cutting and reforming tee 3, the internal space of the steam base 6 forms a steam injection cavity, and a gas injection pipe 8 is sealingly arranged on the steam base 6, the end of the gas injection pipe 8 is arranged in the steam injection cavity. The upper end of the gas injection pipe 8 is provided with a gas injection nozzle 5, and a plurality of steam sieve holes 10 are arranged on the gas injection nozzle 5. The plurality of steam sieve holes 10 on the gas injection nozzle 5 help to uniformly distribute the steam, improving the steaming effect.

[0025] The steam base 6 is provided with a pull hole allowing the gas injection pipe to be pulled out, and the steam base is provided with a packing groove at the position where the pull hole is arranged, the packing 9 is arranged in the packing groove, the end of the packing 9 is provided with a gland 7, and the gland 7 and the steam base 6 are connected by bolts. The packing is graphite packing, which is constantly compressed by the gland 7 to achieve the sealing effect of the gas injection pipe.

[0026] The use of the packing gland 7 and the graphite packing provides good sealing performance, prevents steam leakage, and the corrosion resistance of the graphite packing improves the durability of the device.

[0027] The gas injection pipe 8 is connected with a gas injection control valve 11. Through the gas injection control valve 11, the amount of steam injection can be accurately controlled, improving the controllability and safety of the steaming process.

[0028] The gas injection pipe 8 is an explosion-proof metal pipe, which enhances the safety of the device and prevents potential explosion risks caused by steam pressure.

[0029] In use, the gas injection pipe is pulled out to the connection end of the water cutting and reforming tee 3 and the tank body, and then fixed and sealed by the gland and the graphite packing, the water cutting root valve is opened, steam continuously enters the tank body for cleaning, the condensed water generated is discharged through the second end of the water cutting and reforming tee 3, and after the steam cleaning is completed, the water cutting root valve is closed.

[0030] The utility model improves the security and efficiency of the steaming process significantly. The connection flange of the water cutting reconstruction tee joint and the tank body ensures the stability and sealing of the device, reducing the risk of leakage. The setting of the water cutting root valve and the water cutting control valve allows precise control of wastewater discharge, reduces wastewater discharge, improves wastewater recovery efficiency, and helps environmental protection and resource recycling. The design of the steam assembly, including the sealed sliding setting of the steam injection cavity and the injection pipe inside the steam base, ensures the continuity and uniform distribution of steam injection, improving the efficiency and thoroughness of the steaming process. The multiple steam sieve openings on the injection nozzle further promote the uniform distribution of steam, optimizing the steaming effect. The use of packing gland and graphite packing provides good sealing performance, preventing steam leakage, and the corrosion resistance of graphite packing improves the durability of the device. The connection of the injection pipe and the injection control valve allows precise control of steam injection, enhancing the controllability and safety of the steaming process. In addition, the use of explosion-proof metal pipe enhances the safety of the device, preventing potential explosion risks caused by steam pressure.

[0031] It should be noted that in this paper, such as the first and second relationship terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "includes a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0032] The above examples are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the utility model embodiments.

Claims

1. A vapor containment apparatus for a liquefied hydrocarbon storage tank, comprising: The water cutting reforming tee joint is connected with the tank body through a connecting flange at a first end, connected with a waste water recovery position at a second end, and connected with a steam assembly at a third end.

2. A vapor containment device for a liquefied hydrocarbon storage tank as defined in claim 1, wherein A water cutting root valve is arranged between the tank body and the water cutting reforming tee joint.

3. A vapor containment device for a liquefied hydrocarbon storage tank as defined in claim 1, wherein A water cutting control valve is arranged between the water cutting reforming tee joint and the waste water recovery position.

4. A vapor containment device for a liquefied hydrocarbon storage tank as defined in claim 1, wherein The steam assembly comprises a steam base connected with the water cutting reforming tee joint, an internal space of the steam base forms a steam injection cavity, an injection pipe is sealingly arranged on the steam base, and an end of the injection pipe is arranged in the steam injection cavity.

5. A vapor containment device for a liquefied hydrocarbon storage tank as defined in claim 4, wherein An injection nozzle is arranged at an upper end of the injection pipe, and a plurality of steam sieve holes are arranged on the injection nozzle.

6. A vapor containment device for a liquefied hydrocarbon storage tank as defined in claim 5, wherein A pull hole is arranged on the steam base to allow the injection pipe to be pulled, a packing groove is arranged at a position of the steam base where the pull hole is arranged, a packing is arranged in the packing groove, an end of the packing is provided with a gland, and the gland is connected with the steam base through a bolt.

7. A vapor containment device for a liquefied hydrocarbon storage tank as defined in claim 6, wherein The injection pipe is connected with an injection control valve.

8. A vapor containment device for a liquefied hydrocarbon storage tank as defined in claim 7, wherein The injection pipe is a blast-proof metal pipe.

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